FDA Commissioner Scott Gottlieb is calling for a meeting with the CEOs of Altria and Juul Labs so they can explain their efforts to reduce teen vaping, which he says have fallen short of promises. The companies recently made a deal to get Juul's pod-based products into more stores.

The FDA has listed six device categories in a revised guidance on unclassified devices it will exempt from premarket notification requirements. The categories are ear, nose and throat devices; physical medicine devices; gastroenterology-urology devices; general and plastic surgical devices; obstetrical and gynecological devices; and neurological devices.

Trace amounts of an unapproved biotech rice have been discovered throughout much of the U.S. rice-growing area, according to Riceland Foods, a farmer-owned cooperative that markets the rice. The rice from the 2005 crop has been found "throughout the southern rice-growing area," according to a Riceland spokesman. The U.S. faces global fallout from the incident, and several nations are demanding more information from the USDA; others have closed their borders to U.S. exports.